Sifting through the array of Jeep Wrangler SUVs will show a deep split between the style-conscious drivers and the real Jeep enthusiasts. Casual Wrangler drivers often buy the four-cylinder models with rear-wheel drive and removable cloth tops--you'll see many of those on certified used-car lots. At the other extreme, trailblazers opt for V-6 and V-8 Wranglers with hardtops and four-wheel drive, even Rubicon edition hardware; you'll see most of these for sale by owner, as they're often heavily modified.